CN112216434B - Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof - Google Patents
Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof Download PDFInfo
- Publication number
- CN112216434B CN112216434B CN202011035931.7A CN202011035931A CN112216434B CN 112216434 B CN112216434 B CN 112216434B CN 202011035931 A CN202011035931 A CN 202011035931A CN 112216434 B CN112216434 B CN 112216434B
- Authority
- CN
- China
- Prior art keywords
- temperature
- shielding
- stirring
- layer
- naval vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/12—Arrangements for exhibiting specific transmission characteristics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a cross-linked polyethylene insulated anti-interference shielding naval vessel cable and a preparation method thereof, a shielding material is prepared in the process of preparing the anti-interference shielding naval vessel cable, the shielding material contains a large amount of high-resistance metal objects, the high resistivity enables electromagnetic waves to easily enter and quickly attenuate, the high magnetic conductivity of the cable can be still maintained at high frequency, the graphene, the carbon nano tube and the copper have excellent conductivity, the shielding carrier can have electric loss and magnetic loss at the same time, the impedance matching of electromagnetic absorption is realized, the absorption frequency band is widened, the anti-interference performance is increased, and can generate oxyacid of phosphorus during combustion, the oxyacid of phosphorus can catalyze the dehydration of hydroxyl-containing compounds to carbon, and then produce the coke layer on the surface of heat preservation material, the coke layer can separate oxygen, insulate against heat and then make flame extinguish for the fire resistance of cable further promotes.
Description
Technical Field
The invention belongs to the technical field of cable preparation, and particularly relates to a crosslinked polyethylene insulated anti-interference shielding naval vessel cable and a preparation method thereof.
Background
With the improvement of automation level of ships and offshore platforms, a large number of electronic devices and instruments need to transmit signals through various communication cables, and due to the fact that the use environment of the ships is severe, at present, the cables are frequently replaced for the sake of safety of many ships, the operation cost is greatly increased, and the execution of long-term offshore tasks is restricted, so that cable materials are reinforced in application.
When the existing anti-interference shielding naval vessel cable is used, the communication effect can be influenced due to the poor shielding effect of the cable, the flame retardance of the cable is poor, and the cable can be rapidly combusted when exposed fire acts.
Disclosure of Invention
The invention aims to provide a crosslinked polyethylene insulated anti-interference shielding naval vessel cable and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
when the existing anti-interference shielding naval vessel cable is used, the communication effect can be influenced due to the poor shielding effect of the cable, the flame retardance of the cable is poor, and the cable can be rapidly combusted when exposed fire acts.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an anti-interference shielding naval vessel cable of crosslinked polyethylene insulation, includes the conductor, divides the shielding layer, winds the covering, total shielding layer, and the outward appearance cladding of conductor has the insulating layer, and conductor and insulating layer are insulating to form insulating sinle silk, and per two insulating sinle silks are the pair twist group, and the outer cladding of pair twist group divides the shielding layer, and it has around the covering to have many pairs twist group outsourcing, and the outward appearance cladding of covering has total shielding layer, and the outward appearance cladding of total shielding layer has the sheath.
Furthermore, the conductor adopts a tinned conductor, the insulating layer is made of a cross-linked polyethylene material, the sub-shielding layer is made of a shielding material, the wrapping layer is made of an alkali-free glass fiber tape, the total shielding layer is made of a tinned copper wire, and the sheath is made of a flame-retardant low-smoke halogen-free polyolefin material.
The high-flame-retardant low-smoke halogen-free polyolefin material is prepared by the following steps:
step 1: mixing 40 parts of EVA elastomer, 20 parts of POE elastomer and 20 parts of EMA elastomer to prepare a first mixture, adding the first mixture into a double-screw extruder, and extruding at the temperature of 190 ℃ to prepare a base material;
step 2: and (2) mixing the base material prepared in the step (1), 30 parts of magnesium hydroxide and 0.5 part of dicumyl peroxide to prepare a second mixture, reducing the temperature of the mixture, adding the mixture into a double-screw extruder, and extruding the mixture at the temperature of 170 ℃ to prepare the high-flame-retardant low-smoke halogen-free polyolefin material.
Further, the shielding material is prepared by the following steps:
step A1: adding concentrated sulfuric acid into a reaction kettle, adding sodium nitrate and graphite under the conditions that the rotating speed is 150-200r/min and the temperature is 3-5 ℃, stirring for 30-40min, adding potassium permanganate, stirring for 1-2h under the condition that the temperature is 10-15 ℃, heating to 35-40 ℃, adding deionized water, stirring for 1-1.5h under the condition that the temperature is 95-98 ℃, cooling to 40-50 ℃, adding hydrogen peroxide, continuously stirring for 30-40min, filtering to remove filtrate, washing a filter cake with a hydrochloric acid solution, centrifuging to remove supernatant after sulfate radicals are removed, and drying a substrate to obtain graphene oxide;
step A2: adding sodium dodecyl benzene sulfonate, a carbon nano tube and deionized water into a reaction kettle, carrying out ultrasonic treatment for 10-15min under the condition of the frequency of 5-10MHz, adding the graphene oxide prepared in the step A1, continuing the ultrasonic treatment for 1-1.5h, filtering to remove the deionized water, roasting a filter cake for 2-3h under the condition of the temperature of 200-300 ℃, cooling to room temperature to prepare a composite carrier, dispersing the composite carrier in the deionized water, adding hexahydrate, nickel chloride, hexahydrate, ferric chloride, copper sulfate and citric acid, stirring for 2-3h under the conditions of the rotation speed of 1000-1500r/min and the temperature of 60-65 ℃, adjusting the pH value of a reaction solution to 11, carrying out reaction for 3-5h under the condition of the temperature of 140-160 ℃, centrifuging to remove a supernatant, drying the substrate to prepare a shielding carrier;
step A3: adding 4,4' -dihydroxy benzophenone, dichloromethane and triethanolamine into a reaction kettle, stirring at the rotation speed of 150-200r/min and the temperature of 3-5 ℃, adding diphenyl chlorophosphate, stirring for 20-30min, adding a mixed solution, standing until a water layer is removed by layering, distilling a base layer at the temperature of 40-50 ℃ to remove dichloromethane to obtain an intermediate A, adding the intermediate A and ethanol into the reaction kettle, stirring until the intermediate A is completely dissolved, adding sodium borohydride at the temperature of 1-3 ℃, continuously stirring for 4-6h, and distilling under reduced pressure to remove ethanol to obtain an intermediate B;
the reaction process is as follows:
step A4: adding toluene and mixed acid into a reaction kettle, reacting for 2-3h under the conditions that the rotating speed is 120-minus one and the temperature is 50-55 ℃ for obtaining an intermediate C, adding the intermediate C, iron powder and a sulfuric acid solution into the reaction kettle, reacting for 30-40min under the conditions that the rotating speed is 60-80r/min and the temperature is 90-95 ℃, adding liquid bromine, reacting for 1-2h to obtain an intermediate D, adding the intermediate D and sodium nitrate into the reaction kettle, stirring and adding a hydrochloric acid solution under the conditions that the rotating speed is 120-minus one and the temperature is 150r/min, reacting for 1-1.5h, adding a hypophosphorous acid aqueous solution, and continuing stirring for 2-3h to obtain an intermediate E;
the reaction process is as follows:
step A5: dissolving the intermediate B prepared in the step A3 in toluene, adding the intermediate E prepared in the step A4, stirring for 2-3h at the rotation speed of 200-300r/min and the temperature of 40-50 ℃, distilling to remove toluene to obtain an intermediate F, dissolving the intermediate F in deionized water, refluxing at the temperature of 110-120 ℃, adding potassium permanganate, and reacting for 2-3h to obtain an intermediate G;
the reaction process is as follows:
step A6: dissolving bisphenol A epoxy resin in tetrahydrofuran to prepare bisphenol A epoxy resin solution, adding gamma-aminopropyltriethoxysilane into a reaction kettle, stirring at the rotation speed of 120-150r/min and the temperature of 50-60 ℃, adding the intermediate G prepared in the step A5 and 1-hydroxybenzotriazole, reacting for 3-5h, adding bisphenol A epoxy resin solution and dibutyltin dilaurate, reacting for 3-5h at the rotation speed of 300-500r/min and the temperature of 90-95 ℃, adding the shielding carrier prepared in the step A2, ethylenediamine and 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, and continuing to react for 8-10h to prepare the shielding material.
Further, the amount of the concentrated sulfuric acid, the sodium nitrate, the graphite, the potassium permanganate, the deionized water and the hydrogen peroxide in the step A1 is 20mL to 0.5g to 4g to 140mL to 10mL, the mass fraction of the concentrated sulfuric acid is 75-80%, and the mass fraction of the hydrochloric acid solution is 10-15%.
Further, the amount of the sodium dodecyl benzene sulfonate in the step A2 is 3-5% of the mass of the carbon nano tube, the amount mass ratio of the graphene oxide to the carbon nano tube is 1:1, and the amount mass ratio of the composite carrier, the hexahydrate, the nickel chloride, the hexahydrate, the ferric chloride, the copper sulfate and the citric acid is 5:1:1: 1-1.5.
Furthermore, the using amount ratio of the 4,4' -dihydroxy benzophenone, the triethanolamine and the diphenyl chlorophosphate in the step A3 is 2g:3g:4.5-4.8mL, and the using amount mass ratio of the intermediate A and the sodium borohydride is 6-6.5: 0.25.
Further, the volume ratio of the toluene to the mixed acid in the step A4 is 1:2, the mixed acid is formed by mixing concentrated sulfuric acid with the mass fraction of 70-80% and concentrated nitric acid with the mass fraction of 70-75% according to the volume ratio of 1.2:1, the dosage ratio of the intermediate C, iron powder and sulfuric acid solution is 4g:8g:20mL, the mass fraction of the sulfuric acid solution is 20-30%, the molar ratio of liquid bromine to the intermediate C is 1:1, the dosage ratio of the intermediate D, sodium nitrate, hydrochloric acid solution and hypophosphorous acid aqueous solution is 3g:1-1.5g:5mL:5mL, the mass fraction of the hydrochloric acid solution is 15-20%, and the hypophosphorous acid aqueous solution is formed by mixing hypophosphorous acid and deionized water according to the volume ratio of 1: 3.
Further, the molar ratio of the intermediate B to the intermediate E in the step A5 is 2:1, and the mass ratio of the intermediate F to the potassium permanganate is 10: 3.
Further, the using ratio of the bisphenol A type epoxy resin and tetrahydrofuran in the step A6 is 1g:5mL, the molar ratio of the gamma-aminopropyltriethoxysilane to the intermediate G is 1:1, the dosage of the 1-hydroxybenzotriazole is 50-60% of the mass of the gamma-aminopropyltriethoxysilane, and the dosage ratio of the bisphenol A epoxy resin solution to the intermediate G is 5mL:2g, the using amount of dibutyltin dilaurate is 1-1.5% of the mass of the bisphenol A epoxy resin solution, the using amount of the shielding carrier is 1-1.3 times of the mass of the bisphenol A epoxy resin solution, the using amount of ethylenediamine is the same as the molar amount of epoxy groups in the bisphenol A epoxy resin solution, and the using amount of 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline is 50-60% of the mass of ethylenediamine.
A preparation method of a cross-linked polyethylene insulated anti-interference shielding naval vessel cable specifically comprises the following steps:
step S1: coating an insulating layer on the outer surface of the conductor to obtain a cable core;
step S2: uniformly installing two cable cores inside the total shielding layer to obtain a cable;
step S3: uniformly installing a plurality of uniformly distributed cables inside the wrapping layer, coating the outer surface of the wrapping layer with a total shielding layer, and coating the outer surface of the total shielding layer with a sheath to obtain the anti-interference shielding naval vessel cable.
The invention has the beneficial effects that: the invention prepares a shielding material in the process of preparing a cross-linked polyethylene insulated anti-interference shielding naval vessel cable, the shielding material takes graphite as raw material, potassium permanganate and hydrogen peroxide are used for oxidizing the graphite to prepare graphene oxide, the surface of the graphene oxide contains a large amount of carboxyl, then carbon nano tubes are dispersed in deionized water, the graphene oxide is added for ultrasonic treatment, the mixture is roasted for 2 to 3 hours, hexahydrate, nickel chloride, hexahydrate, ferric chloride and copper sulfate are added to prepare a composite carrier, the metals of nickel, iron and copper are fixed on the composite carrier to prepare the shielding carrier, the surface of the shielding carrier contains a large amount of high-resistance metal objects, the high resistivity enables electromagnetic waves to easily enter and quickly attenuate, the cable can still maintain high magnetic conductivity at high frequency, and the graphene, the carbon nano tubes and the copper have excellent conductivity, the shielding carrier has electric loss and magnetic loss at the same time, realizes impedance matching of electromagnetic absorption, widens the absorption frequency band, increases the anti-interference performance, simultaneously reacts 4,4' -dihydroxy benzophenone with diphenyl chlorophosphate to prepare an intermediate A, the intermediate A further reacts to prepare an intermediate B, then toluene is used as a raw material to react with mixed acid to connect a nitro group on a benzene ring, the nitro group is reduced to an amino group, the amino group reacts with liquid bromine to prepare an intermediate D, the intermediate D further reacts to change the amino group into a diazo group, then an elimination reaction is carried out under the action of hypophosphorous acid aqueous solution to remove the amino group to prepare an intermediate E, the intermediate E and the intermediate B react to prepare an intermediate F, the intermediate F is further oxidized to change the methyl group into a carboxyl group to prepare an intermediate G, and the intermediate G is added by using gamma-aminopropyltriethoxysilane as a raw material, under the action of 1-hydroxybenzotriazole, carboxyl on the intermediate G and amino on gamma-aminopropyltriethoxysilane react, bisphenol A epoxy resin solution is added, under the action of dibutyltin dilaurate, alkoxy on the gamma-aminopropyltriethoxysilane and hydroxyl on the bisphenol A epoxy resin are condensed, shielding carrier, ethylenediamine, 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline are added, one amino of the ethylenediamine and epoxy group on the bisphenol A epoxy resin react to solidify the epoxy resin, the other amino reacts on the 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline and carboxyl on the shielding carrier to prepare the shielding material, so that the shielding material has a certain high temperature resistance, and during combustion, oxyacid of phosphorus can be generated, the oxyacid of phosphorus catalyzes a hydroxyl-containing compound to dehydrate into carbon, so that a coke layer is generated on the surface of the heat insulation material, and the coke layer can insulate oxygen and heat to extinguish flame, so that the flame retardance of the cable is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to the invention.
In the figure: 1. a conductor; 2. an insulating layer; 3. dividing a shielding layer; 4. wrapping a covering; 5. a total shielding layer; 6. a sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A cross-linked polyethylene insulated anti-interference shielding naval vessel cable comprises a conductor 1, a sub-shielding layer 3, a wrapping layer 4 and a total shielding layer 5, wherein an insulating layer 2 is coated on the outer surface of the conductor 1, the conductor 1 and the insulating layer 2 are insulated to form insulating wire cores, every two insulating wire cores are twisted pairs, the sub-shielding layer 3 is coated outside the twisted pairs, the wrapping layer 4 is coated outside a plurality of twisted pairs, the total shielding layer 5 is coated on the outer surface of the wrapping layer 4, and a sheath 6 is coated on the outer surface of the total shielding layer 5;
the sub-shielding layer 3 is made of shielding material, and the shielding material is made by the following steps:
step A1: adding concentrated sulfuric acid into a reaction kettle, adding sodium nitrate and graphite under the conditions that the rotating speed is 150r/min and the temperature is 3 ℃, stirring for 30min, adding potassium permanganate, stirring for 1h at the temperature of 10 ℃, heating to the temperature of 35 ℃, adding deionized water, stirring for 1h at the temperature of 95 ℃, cooling to the temperature of 40 ℃, adding hydrogen peroxide, continuously stirring for 30min, filtering to remove filtrate, washing a filter cake with hydrochloric acid solution, centrifuging to remove supernatant until sulfate radicals are removed, and drying a substrate to obtain graphene oxide;
step A2: adding sodium dodecyl benzene sulfonate, a carbon nano tube and deionized water into a reaction kettle, carrying out ultrasonic treatment for 10min under the condition of 5MHz, adding graphene oxide prepared in the step A1, continuing ultrasonic treatment for 1h, filtering to remove the deionized water, roasting a filter cake at the temperature of 200 ℃ for 2h, cooling to room temperature to prepare a composite carrier, dispersing the composite carrier in the deionized water, adding hexahydrate and nickel chloride, hexahydrate and ferric chloride, copper sulfate and citric acid, stirring for 2h at the rotation speed of 1000r/min and the temperature of 60 ℃, adjusting the pH value of a reaction solution to 11, carrying out reaction at the temperature of 140 ℃ for 3h, centrifuging to remove a supernatant, and drying a substrate to prepare a shielding carrier;
step A3: adding 4,4' -dihydroxy benzophenone, dichloromethane and triethanolamine into a reaction kettle, stirring at the rotation speed of 150r/min and the temperature of 3 ℃, adding diphenyl chlorophosphate, stirring for 20min, adding a mixed solution, standing until a water layer is removed by layering, distilling a base layer at the temperature of 40 ℃ to remove dichloromethane to obtain an intermediate A, adding the intermediate A and ethanol into the reaction kettle, stirring until the intermediate A is completely dissolved, adding sodium borohydride at the temperature of 1 ℃, continuously stirring for 4h, and distilling under reduced pressure to remove ethanol to obtain an intermediate B;
step A4: adding toluene and mixed acid into a reaction kettle, reacting for 2 hours at the rotation speed of 120r/min and the temperature of 50 ℃ to obtain an intermediate C, adding the intermediate C, iron powder and a sulfuric acid solution into the reaction kettle, reacting for 30 minutes at the rotation speed of 60r/min and the temperature of 90 ℃, adding liquid bromine, reacting for 1 hour to obtain an intermediate D, adding the intermediate D and sodium nitrate into the reaction kettle, stirring and adding a hydrochloric acid solution at the rotation speed of 120r/min, reacting for 1 hour, adding a hypophosphorous acid aqueous solution, and continuing stirring for 2 hours to obtain an intermediate E;
step A5: dissolving the intermediate B prepared in the step A3 in toluene, adding the intermediate E prepared in the step A4, stirring for 2 hours at the rotation speed of 200r/min and the temperature of 40 ℃, distilling to remove toluene to prepare an intermediate F, dissolving the intermediate F in deionized water, refluxing at the temperature of 110 ℃, adding potassium permanganate, and reacting for 2 hours to prepare an intermediate G;
step A6: dissolving bisphenol A epoxy resin in tetrahydrofuran to prepare bisphenol A epoxy resin solution, adding gamma-aminopropyltriethoxysilane into a reaction kettle, stirring at the rotation speed of 120r/min and the temperature of 50 ℃, adding the intermediate G prepared in the step A5 and 1-hydroxybenzotriazole, reacting for 3 hours, adding the bisphenol A epoxy resin solution and dibutyltin dilaurate, reacting for 3 hours at the rotation speed of 300r/min and the temperature of 90 ℃, adding the shielding carrier prepared in the step A2, ethylenediamine and 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, and continuing to react for 8 hours to prepare the shielding material.
Example 2
A cross-linked polyethylene insulated anti-interference shielding naval vessel cable comprises a conductor 1, a sub-shielding layer 3, a wrapping layer 4 and a total shielding layer 5, wherein an insulating layer 2 is coated on the outer surface of the conductor 1, the conductor 1 and the insulating layer 2 are insulated to form insulating wire cores, every two insulating wire cores are twisted pairs, the sub-shielding layer 3 is coated outside the twisted pairs, the wrapping layer 4 is coated outside a plurality of twisted pairs, the total shielding layer 5 is coated on the outer surface of the wrapping layer 4, and a sheath 6 is coated on the outer surface of the total shielding layer 5;
the sub-shielding layer 3 is made of shielding material, and the shielding material is made by the following steps:
step A1: adding concentrated sulfuric acid into a reaction kettle, adding sodium nitrate and graphite under the conditions that the rotating speed is 180r/min and the temperature is 4 ℃, stirring for 35min, adding potassium permanganate, stirring for 1.5h under the condition that the temperature is 13 ℃, heating to 38 ℃, adding deionized water, stirring for 1.5h under the condition that the temperature is 96 ℃, cooling to 45 ℃, adding hydrogen peroxide, continuously stirring for 35min, filtering to remove filtrate, washing filter cakes with hydrochloric acid solution, centrifuging to remove supernatant until sulfate radicals are removed, and drying a substrate to obtain graphene oxide;
step A2: adding sodium dodecyl benzene sulfonate, a carbon nano tube and deionized water into a reaction kettle, carrying out ultrasonic treatment for 13min under the condition of 8MHz, adding graphene oxide prepared in the step A1, continuing ultrasonic treatment for 1.5h, filtering to remove the deionized water, roasting a filter cake at the temperature of 300 ℃ for 2h, cooling to room temperature to prepare a composite carrier, dispersing the composite carrier in the deionized water, adding hexahydrate, nickel chloride, hexahydrate, ferric chloride, copper sulfate and citric acid, stirring for 3h at the rotation speed of 1500r/min and the temperature of 60 ℃, adjusting the pH value of a reaction solution to 11, carrying out reaction for 4h at the temperature of 150 ℃, centrifuging to remove a supernatant, and drying a substrate to prepare a shielding carrier;
step A3: adding 4,4' -dihydroxy benzophenone, dichloromethane and triethanolamine into a reaction kettle, stirring at the rotation speed of 180r/min and the temperature of 4 ℃, adding diphenyl chlorophosphate, stirring for 25min, adding a mixed solution, standing until a water layer is removed by layering, distilling a base layer at the temperature of 45 ℃ to remove dichloromethane to obtain an intermediate A, adding the intermediate A and ethanol into the reaction kettle, stirring until the intermediate A is completely dissolved, adding sodium borohydride at the temperature of 2 ℃, continuously stirring for 4-6h, and distilling under reduced pressure to remove ethanol to obtain an intermediate B;
step A4: adding toluene and mixed acid into a reaction kettle, reacting for 3 hours at the rotation speed of 150r/min and the temperature of 50 ℃ to obtain an intermediate C, adding the intermediate C, iron powder and a sulfuric acid solution into the reaction kettle, reacting for 35 minutes at the rotation speed of 60r/min and the temperature of 95 ℃, adding liquid bromine, reacting for 1.5 hours to obtain an intermediate D, adding the intermediate D and sodium nitrate into the reaction kettle, stirring and adding a hydrochloric acid solution at the rotation speed of 150r/min, reacting for 1.5 hours, adding a hypophosphorous acid aqueous solution, and continuing stirring for 2 hours to obtain an intermediate E;
step A5: dissolving the intermediate B prepared in the step A3 in toluene, adding the intermediate E prepared in the step A4, stirring for 2.5 hours at the rotation speed of 300r/min and the temperature of 45 ℃, distilling to remove toluene to prepare an intermediate F, dissolving the intermediate F in deionized water, refluxing at the temperature of 115 ℃, adding potassium permanganate, and reacting for 3 hours to prepare an intermediate G;
step A6: dissolving bisphenol A epoxy resin in tetrahydrofuran to prepare bisphenol A epoxy resin solution, adding gamma-aminopropyltriethoxysilane into a reaction kettle, stirring at the rotation speed of 150r/min and the temperature of 50 ℃, adding the intermediate G prepared in the step A5 and 1-hydroxybenzotriazole, reacting for 5 hours, adding bisphenol A epoxy resin solution and dibutyltin dilaurate, reacting for 3 hours at the rotation speed of 300r/min and the temperature of 95 ℃, adding the shielding carrier prepared in the step A2, ethylenediamine and 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, and continuing to react for 10 hours to prepare the shielding material.
Example 3
A cross-linked polyethylene insulated anti-interference shielding naval vessel cable comprises a conductor 1, a sub-shielding layer 3, a wrapping layer 4 and a total shielding layer 5, wherein an insulating layer 2 is coated on the outer surface of the conductor 1, the conductor 1 and the insulating layer 2 are insulated to form insulating wire cores, every two insulating wire cores are twisted pairs, the sub-shielding layer 3 is coated outside the twisted pairs, the wrapping layer 4 is coated outside a plurality of twisted pairs, the total shielding layer 5 is coated on the outer surface of the wrapping layer 4, and a sheath 6 is coated on the outer surface of the total shielding layer 5;
the sub-shielding layer 3 is made of shielding material, and the shielding material is made by the following steps:
step A1: adding concentrated sulfuric acid into a reaction kettle, adding sodium nitrate and graphite under the conditions of a rotation speed of 200r/min and a temperature of 5 ℃, stirring for 40min, adding potassium permanganate, stirring for 2h at a temperature of 15 ℃, heating to 40 ℃, adding deionized water, stirring for 1.5h at a temperature of 98 ℃, cooling to 50 ℃, adding hydrogen peroxide, continuously stirring for 40min, filtering to remove filtrate, washing a filter cake with a hydrochloric acid solution, centrifuging to remove supernatant until sulfate radicals are removed, and drying a substrate to obtain graphene oxide;
step A2: adding sodium dodecyl benzene sulfonate, a carbon nano tube and deionized water into a reaction kettle, carrying out ultrasonic treatment for 15min under the condition of 10MHz, adding graphene oxide prepared in the step A1, continuing ultrasonic treatment for 1.5h, filtering to remove the deionized water, roasting a filter cake at the temperature of 300 ℃ for 3h, cooling to room temperature to prepare a composite carrier, dispersing the composite carrier in the deionized water, adding hexahydrate, nickel chloride, hexahydrate, ferric chloride, copper sulfate and citric acid, stirring for 3h at the rotation speed of 1500r/min and the temperature of 65 ℃, adjusting the pH value of a reaction solution to 11, carrying out reaction at the temperature of 160 ℃ for 5h, centrifuging to remove a supernatant, and drying a substrate to prepare a shielding carrier;
step A3: adding 4,4' -dihydroxy benzophenone, dichloromethane and triethanolamine into a reaction kettle, stirring at the rotation speed of 200r/min and the temperature of 5 ℃, adding diphenyl chlorophosphate, stirring for 30min, adding a mixed solution, standing until a water layer is removed by layering, distilling a base layer at the temperature of 50 ℃ to remove dichloromethane to obtain an intermediate A, adding the intermediate A and ethanol into the reaction kettle, stirring until the intermediate A is completely dissolved, adding sodium borohydride at the temperature of 1-3 ℃, continuously stirring for 6h, and distilling under reduced pressure to remove ethanol to obtain an intermediate B;
step A4: adding toluene and mixed acid into a reaction kettle, reacting for 3 hours at the rotation speed of 150r/min and the temperature of 55 ℃ to obtain an intermediate C, adding the intermediate C, iron powder and a sulfuric acid solution into the reaction kettle, reacting for 40 minutes at the rotation speed of 80r/min and the temperature of 95 ℃, adding liquid bromine, reacting for 2 hours to obtain an intermediate D, adding the intermediate D and sodium nitrate into the reaction kettle, stirring and adding a hydrochloric acid solution at the rotation speed of 150r/min, reacting for 1.5 hours, adding a hypophosphorous acid aqueous solution, and continuing stirring for 3 hours to obtain an intermediate E;
step A5: dissolving the intermediate B prepared in the step A3 in toluene, adding the intermediate E prepared in the step A4, stirring for 3 hours at the rotation speed of 300r/min and the temperature of 50 ℃, distilling to remove toluene to prepare an intermediate F, dissolving the intermediate F in deionized water, refluxing at the temperature of 120 ℃, adding potassium permanganate, and reacting for 3 hours to prepare an intermediate G;
step A6: dissolving bisphenol A epoxy resin in tetrahydrofuran to prepare bisphenol A epoxy resin solution, adding gamma-aminopropyltriethoxysilane into a reaction kettle, stirring at the rotation speed of 150r/min and the temperature of 60 ℃, adding the intermediate G prepared in the step A5 and 1-hydroxybenzotriazole, reacting for 5 hours, adding the bisphenol A epoxy resin solution and dibutyltin dilaurate, reacting for 5 hours at the rotation speed of 500r/min and the temperature of 95 ℃, adding the shielding carrier prepared in the step A2, ethylenediamine and 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, and continuing to react for 10 hours to prepare the shielding material.
Comparative example
This contrast is a common anti-interference shielded naval vessel cable in the market.
The performance of the anti-interference shielding naval vessel cables prepared in the embodiments 1 to 3 and the comparative example is tested, and the test results are shown in the following table 1;
TABLE 1
From the above table 1, it can be seen that the volume resistivity of the anti-interference shielding naval vessel cable prepared in the embodiments 1-3 is 400-410 Ω · cm, and the flame retardant rating is V0, while the volume resistivity of the anti-interference shielding naval vessel cable prepared in the comparative example is 230 Ω · cm, and the flame retardant rating is V2, which indicates that the anti-interference shielding naval vessel cable has good electromagnetic shielding and flame retardant effects.
Referring to fig. 1, the anti-interference shielding naval vessel cable manufactured by the invention comprises a conductor 1, a total shielding layer 5 and a wrapping layer 4, wherein an insulating layer 2 is coated and installed on the outer surface of the conductor 1, the conductor 1 and the insulating layer 2 are compounded to form a cable core, the two cable cores are uniformly installed inside the total shielding layer 5, the cable core and the total shielding layer 5 are compounded to form cables, a plurality of uniformly distributed cables are uniformly installed inside the wrapping layer 4, the total shielding layer 5 is coated and installed on the outer surface of the wrapping layer 4, and a sheath 6 is coated and installed on the outer surface of the total shielding layer 5.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. The utility model provides a cross-linked polyethylene insulating anti-interference shielding naval vessel cable which characterized in that: the shielding layer comprises a conductor (1), a sub-shielding layer (3), a winding layer (4), a total shielding layer (5), wherein an insulating layer (2) is coated on the outer surface of the conductor (1), the conductor (1) and the insulating layer (2) are insulated to form insulating wire cores, every two insulating wire cores are twisted pairs, the sub-shielding layer (3) is coated outside the twisted pairs, a plurality of pairs of twisted pairs are coated with the winding layer (4), the total shielding layer (5) is coated on the outer surface of the winding layer (4), and a sheath (6) is coated on the outer surface of the total shielding layer (5);
the cable is characterized in that the conductor (1) is a tinned conductor, the insulating layer (2) is made of a cross-linked polyethylene material, the sub-shielding layer (3) is made of a shielding material, the wrapping layer (4) is made of an alkali-free glass fiber tape, the total shielding layer (5) is made of a tinned copper wire, and the sheath (6) is made of a flame-retardant low-smoke halogen-free polyolefin material;
the shielding material is prepared by the following steps:
step A1: adding concentrated sulfuric acid into a reaction kettle, adding sodium nitrate and graphite under the conditions that the rotating speed is 150-200r/min and the temperature is 3-5 ℃, stirring for 30-40min, adding potassium permanganate, stirring for 1-2h under the condition that the temperature is 10-15 ℃, heating to 35-40 ℃, adding deionized water, stirring for 1-1.5h under the condition that the temperature is 95-98 ℃, cooling to 40-50 ℃, adding hydrogen peroxide, continuously stirring for 30-40min, filtering to remove filtrate, washing a filter cake with a hydrochloric acid solution, centrifuging to remove supernatant after sulfate radicals are removed, and drying a substrate to obtain graphene oxide;
step A2: adding sodium dodecyl benzene sulfonate, a carbon nano tube and deionized water into a reaction kettle, carrying out ultrasonic treatment for 10-15min under the condition of the frequency of 5-10MHz, adding the graphene oxide prepared in the step A1, continuing the ultrasonic treatment for 1-1.5h, filtering to remove the deionized water, roasting a filter cake for 2-3h under the condition of the temperature of 200-300 ℃, cooling to room temperature to prepare a composite carrier, dispersing the composite carrier in the deionized water, adding hexahydrate, nickel chloride, hexahydrate, ferric chloride, copper sulfate and citric acid, stirring for 2-3h under the conditions of the rotation speed of 1000-1500r/min and the temperature of 60-65 ℃, adjusting the pH value of a reaction solution to 11, carrying out reaction for 3-5h under the condition of the temperature of 140-160 ℃, centrifuging to remove a supernatant, drying the substrate to prepare a shielding carrier;
step A3: adding 4,4' -dihydroxy benzophenone, dichloromethane and triethanolamine into a reaction kettle, stirring at the rotation speed of 150-200r/min and the temperature of 3-5 ℃, adding diphenyl chlorophosphate, stirring for 20-30min, adding a mixed solution, standing until a water layer is removed by layering, distilling a base layer at the temperature of 40-50 ℃ to remove dichloromethane to obtain an intermediate A, adding the intermediate A and ethanol into the reaction kettle, stirring until the intermediate A is completely dissolved, adding sodium borohydride at the temperature of 1-3 ℃, continuously stirring for 4-6h, and distilling under reduced pressure to remove ethanol to obtain an intermediate B;
step A4: adding toluene and mixed acid into a reaction kettle, reacting for 2-3h under the conditions that the rotating speed is 120-minus one and the temperature is 50-55 ℃ for obtaining an intermediate C, adding the intermediate C, iron powder and a sulfuric acid solution into the reaction kettle, reacting for 30-40min under the conditions that the rotating speed is 60-80r/min and the temperature is 90-95 ℃, adding liquid bromine, reacting for 1-2h to obtain an intermediate D, adding the intermediate D and sodium nitrate into the reaction kettle, stirring and adding a hydrochloric acid solution under the conditions that the rotating speed is 120-minus one and the temperature is 150r/min, reacting for 1-1.5h, adding a hypophosphorous acid aqueous solution, and continuing stirring for 2-3h to obtain an intermediate E;
step A5: dissolving the intermediate B prepared in the step A3 in toluene, adding the intermediate E prepared in the step A4, stirring for 2-3h at the rotation speed of 200-300r/min and the temperature of 40-50 ℃, distilling to remove toluene to obtain an intermediate F, dissolving the intermediate F in deionized water, refluxing at the temperature of 110-120 ℃, adding potassium permanganate, and reacting for 2-3h to obtain an intermediate G;
step A6: dissolving bisphenol A epoxy resin in tetrahydrofuran to prepare bisphenol A epoxy resin solution, adding gamma-aminopropyltriethoxysilane into a reaction kettle, stirring at the rotation speed of 120-150r/min and the temperature of 50-60 ℃, adding the intermediate G prepared in the step A5 and 1-hydroxybenzotriazole, reacting for 3-5h, adding bisphenol A epoxy resin solution and dibutyltin dilaurate, reacting for 3-5h at the rotation speed of 300-500r/min and the temperature of 90-95 ℃, adding the shielding carrier prepared in the step A2, ethylenediamine and 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline, and continuing to react for 8-10h to prepare the shielding material.
2. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the dosage of the concentrated sulfuric acid, the sodium nitrate, the graphite, the potassium permanganate, the deionized water and the hydrogen peroxide in the step A1 is 20mL, 0.5g, 1g, 4g, 140mL and 10mL, the mass fraction of the concentrated sulfuric acid is 75-80%, and the mass fraction of the hydrochloric acid solution is 10-15%.
3. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the amount of the sodium dodecyl benzene sulfonate in the step A2 is 3-5% of the mass of the carbon nano tube, the amount mass ratio of the graphene oxide to the carbon nano tube is 1:1, and the amount mass ratio of the composite carrier, the hexahydrate and the nickel chloride, the hexahydrate and the ferric chloride, the copper sulfate and the citric acid is 5:1:1: 1-1.5.
4. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the dosage ratio of the 4,4' -dihydroxy benzophenone, the triethanolamine and the diphenyl chlorophosphate in the step A3 is 2g to 3g to 4.5 to 4.8mL, and the dosage mass ratio of the intermediate A to the sodium borohydride is 6 to 6.5 to 0.25.
5. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the volume ratio of the toluene to the mixed acid in the step A4 is 1:2, the mixed acid is formed by mixing concentrated sulfuric acid with the mass fraction of 70-80% and concentrated nitric acid with the mass fraction of 70-75% according to the volume ratio of 1.2:1, the use ratio of the intermediate C, the iron powder and the sulfuric acid solution is 4g:8g:20mL, the mass fraction of the sulfuric acid solution is 20-30%, the use ratio of the liquid bromine to the intermediate C is 1:1, the use ratio of the intermediate D, the sodium nitrate, the hydrochloric acid solution and the hypophosphorous acid aqueous solution is 3g:1-1.5g:5mL:5mL, the mass fraction of the hydrochloric acid solution is 15-20%, and the hypophosphorous acid aqueous solution is formed by mixing hypophosphorous acid and deionized water according to the volume ratio of 1: 3.
6. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the molar ratio of the intermediate B to the intermediate E in the step A5 is 2:1, and the mass ratio of the intermediate F to the potassium permanganate is 10: 3.
7. The cross-linked polyethylene insulated anti-interference shielding naval vessel cable according to claim 1, wherein: the using amount ratio of the bisphenol A type epoxy resin and tetrahydrofuran in the step A6 is 1g:5mL, the molar ratio of the gamma-aminopropyltriethoxysilane to the intermediate G is 1:1, the dosage of the 1-hydroxybenzotriazole is 50-60% of the mass of the gamma-aminopropyltriethoxysilane, and the dosage ratio of the bisphenol A epoxy resin solution to the intermediate G is 5mL:2g, the using amount of dibutyltin dilaurate is 1-1.5% of the mass of the bisphenol A epoxy resin solution, the using amount of the shielding carrier is 1-1.3 times of the mass of the bisphenol A epoxy resin solution, the using amount of ethylenediamine is the same as the molar amount of epoxy groups in the bisphenol A epoxy resin solution, and the using amount of 2-ethoxy-1-ethoxycarbonyl-1, 2-dihydroquinoline is 50-60% of the mass of ethylenediamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035931.7A CN112216434B (en) | 2020-09-27 | 2020-09-27 | Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011035931.7A CN112216434B (en) | 2020-09-27 | 2020-09-27 | Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112216434A CN112216434A (en) | 2021-01-12 |
| CN112216434B true CN112216434B (en) | 2022-02-18 |
Family
ID=74052591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011035931.7A Active CN112216434B (en) | 2020-09-27 | 2020-09-27 | Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112216434B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113025033B (en) * | 2021-03-12 | 2022-05-17 | 常州宏巨电子科技有限公司 | Modified foamed polyurethane film material and preparation method thereof |
| CN113880520A (en) * | 2021-10-18 | 2022-01-04 | 界首市宝业瑞祥建筑工业化有限公司 | Repair material for micro-cracks on surface of prefabricated part |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604569A (en) * | 1983-06-22 | 1985-01-11 | Hitachi Powdered Metals Co Ltd | Paint for shielding electromagnetic radiation |
| WO2013009570A1 (en) * | 2011-07-08 | 2013-01-17 | General Cable Technologies Corporation | Shielding for cable components and method |
| CN203192473U (en) * | 2013-01-25 | 2013-09-11 | 安徽凯博尔特种电缆集团有限公司 | Cable used for ocean engineering system |
| CN203192440U (en) * | 2013-03-29 | 2013-09-11 | 无锡市金正电缆有限公司 | Novel computer cable |
| CN204178807U (en) * | 2014-09-11 | 2015-02-25 | 江苏赛德电气有限公司 | The anti-interference high flame retardant waterproof measurement and control cable of resistance to greasy filth of Offshore Engineering |
| CN206774294U (en) * | 2017-05-26 | 2017-12-19 | 扬州中大电缆有限公司 | A kind of flame-retardant environment-friendly type computer cable |
| CN110634597A (en) * | 2019-09-27 | 2019-12-31 | 安徽联嘉祥特种电缆有限公司 | Graphene composite material cable and production method |
-
2020
- 2020-09-27 CN CN202011035931.7A patent/CN112216434B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112216434A (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112216434B (en) | Cross-linked polyethylene insulated anti-interference shielding naval vessel cable and preparation method thereof | |
| CN101070412B (en) | Halogen-free expansion fire-retardant cable material and environment-protection type cable made thereby | |
| CN112159582B (en) | Electromagnetic wave shielding material and preparation method thereof | |
| CN108250527A (en) | A kind of radiation protection weather-resistance flame-retardant cable sheath material and preparation method thereof | |
| CN111408713A (en) | Preparation method of nickel-coated graphite composite powder material with high coating rate | |
| CN113999651A (en) | Nickel-cobalt dual-ligand metal-organic framework material and preparation method and application thereof | |
| CN107274975A (en) | The photovoltaic cable and preparation method of a kind of electromagnetic shielding action | |
| CN113793724B (en) | Crosslinked polyethylene insulation environment-friendly rat-proof and termite-proof flame-retardant control cable | |
| CN115413075A (en) | Double-insulation type self-limiting temperature heat tracing band | |
| CN111471301B (en) | Degaussing shielding cable for subway track system and preparation method thereof | |
| CN111205512B (en) | Conductive filler and preparation method of semiconductive shielding material thereof | |
| CN114360796A (en) | Loose sleeve layer stranded non-armoured flame-retardant cable | |
| CN114334235B (en) | Polyethylene insulation intrinsic safety flame-retardant computer cable | |
| CN110204867B (en) | Three-dimensional silver-graphene hybrid foam/epoxy resin electromagnetic shielding composite material and preparation method thereof | |
| CN112210212A (en) | Anti-electromagnetic interference electronic wire harness material and preparation method thereof | |
| CN115536926B (en) | Fireproof light graphene polymer material for aerospace and preparation method and application thereof | |
| CN111524652A (en) | Ethylene propylene rubber insulation rat-proof ant-proof low-smoke halogen-free flame-retardant power cable for ships | |
| CN111499931A (en) | High-strength heat-resistant cable and preparation method thereof | |
| CN111739682A (en) | High-frequency high-anti-interference communication cable based on 5G base station and production method | |
| CN113363009B (en) | Fireproof fire-resistant high-frequency special litz wire cable | |
| CN116884698B (en) | Network cable for monitoring equipment and preparation process thereof | |
| CN220962888U (en) | Novel anti-interference cable | |
| CN118155930A (en) | Copper alloy photovoltaic line for new energy photovoltaic system | |
| CN113393980B (en) | Anti-freezing anti-interference communication cable and production process thereof | |
| CN109111696A (en) | A kind of cable insulation preparation method for material based on tea-seed oil modified epoxy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |